Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I, that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone.,ASHI, CI-ASHI,Endocrine & Metabolism,Mitochondrial metabolism,Mitochondrial metabolism_Mitochondrial markers,Mitochondrial metabolism_Oxidative phosphorylation,Neurodegenerative Diseases,Neuroscience,Signal Transduction,NDUFB8